Including are you ready for this, Bubonic Plague!!
This is a good place to note some of the ways the DS deflects attention away from the consequences of their policies. On the brain dead meme posting sites (Imgur, 9gag, others,) there are a bunch of anti-vaxxer memes. The number of anti-vaxxers is probably less than 9% of the population, and without rampant illegal immigration, they would be protected by herd immunity.
I doubt that most of the people making memes on these sites think deeply into the vaccination issue, and believe that many of these posts are planted to misdirect from the massive influx of diseases the invaders are bringing into our country.